A111250 Numbers n such that 7*n + 10 is prime.

1, 3, 7, 9, 13, 21, 27, 31, 33, 37, 39, 43, 49, 51, 57, 67, 73, 79, 81, 87, 91, 93, 109, 111, 117, 121, 133, 139, 141, 147, 157, 159, 163, 169, 177, 181, 183, 187, 193, 207, 211, 219, 223, 229, 231, 237, 241, 249, 259, 267, 271, 277, 297, 303, 319, 333, 339, 343

Offset: 1

Author

Parthasarathy Nambi, Oct 31 2005

Keywords

• nonn

Comments

One less than the entry of A089033 at the same index.

Examples

			If n=117 then 7*n + 10 = 829 (prime).
		

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000

Crossrefs

Cf. A105772, A024902, A024900.

Programs

Magma

[ n: n in [0..1500] | IsPrime(7*n + 10) ] // Vincenzo Librandi, Jan 31 2011

Mathematica

Select[Range[400],PrimeQ[7#+10]&] (* Harvey P. Dale, Mar 25 2021 *)

PARI

for(n=1,453,if(isprime(7*n + 10),print1(n,",")))

Extensions

Extended by Lambert Klasen (lambert.klasen(AT)gmx.net), Nov 02 2005